行业竞争弱回归结果

行业竞争强回归结果

D_it

−0.240^***

−0.139^***

(0.022)

(0.029)

Constant

5.025^***

4.900^***

(0.113)

(0.144)

control

YES

YES

${\theta }_i$

YES

YES

${\mu }_t$

YES

YES

${\lambda }_j$

YES

YES

N

666,837

664,860

R²

0.647

0.646